Why is there no sound when the computer and TV are connected to the TV?

1. What happened when there was no sound when the computer was connected to the TV?

1. If one end is connected by DVI, DVI can't output sound, and an audio cable must be added.

2. Audio may not be set to HDMI output.

3. Reinstall the computer sound card driver, which is used by many guests.

4. The sound card and the video card jumper need to be connected.

If it still doesn't work, take the cable to other high-definition equipment and test it again.

Setting method of notebook connection image:

1. Press FN+F3 to switch the display output. 2. Set the graphics card to multi-monitor;

Notebook connection sound setting method:

One is to enter the device manager to see if there is an HDMI sound card installed.

Second, if you don't have an HDMI sound card installed, install an HDMI sound card first. The installation method is as follows:

First, turn on the HDMI sound card when BOIS is turned on. After that, install the HDMI sound card driver.

The third is to open the control panel and enter the "sound and audio equipment". In the Audio tab, the default device is an HDMI sound card. It doesn't matter. If the computer itself does not have an integrated HDMI sound card, there is no way. The desktop integrated with HDMI can output sound.

If there is still no sound, please turn off the computer and TV, and then restart it.

2. Why is there no sound on the TV after the computer is connected to it?

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After buying a TV, everyone likes to connect the computer to watch movies, including playing games. But many people find that the image connection is normal, but there is no sound. Therefore, several specific solutions are given for your reference, which may be incomplete or wrong. I hope that netizens will continue to supplement it in order to correct it. In addition, the computer configuration is different and the driver is different, so I can't explain it all. In addition, my TV is Sony's, and only Sony's, other brands are the same. Please refer to the manual for more information. The ports are basically the same. The first method, using HDMI interface, can output sound. As for many people who can't output sound with video cards, that is, the settings are incorrect. At present, the specific method is to install the driver first, which will display HDMI audio output in the device manager, then disable the sound card that comes with the motherboard, and then select HDM output sound in the control panel-sound option. Of course, it is not very important to use HDMI cable when looking at pictures. Please try to use genuine products sealed by big brands, and never use the so-called work package. And there are many fakes in this product. Pay attention to the difference. If using DVI-HDMI adapter, use 24+ 1 pin adapter as much as possible. The second method of using audio cable is simple and practical, and it doesn't need to install driver or setup. Of course, there is one more cable connected than HDMI. Take Sony TV as an example, take photos with your mobile phone. The effect is generally simple. Find the audio input of the TV and connect the other end to the headphone jack of the computer. 3.5mm at both ends of a thread, which is convenient and not expensive. Of course, pay attention to the length of the cable, don't buy short ones.

3. TV and computer link, why there is no sound on TV, what should I do?

First of all, you should make sure that you have selected HDMI sound output as the default device. In the Control Panel, open-Sound and Audio Devices-Properties. The first column in the Audio tab is the default device for sound playback. Select HDMI sound output. Make sure that the HDMI audio option in the BIOS settings is turned on normally, that is, set to "Enabled".

Secondly, in order to output audio and video with HDMI, it is necessary to change the original default sound card driver on the system motherboard to HDMI graphics card audio driver, open Control Panel → Audio and Audio Equipment → Audio → Sound Play, or double-click the Volume (Speaker) icon in the lower right corner of the desktop, select Properties in Options, and confirm that the mixer is selected as ATI HD Audio Post Output or A Card. In the sound option, HDMI audio output is selected as high-definition audio output mode, such as 7. 1 channel. If you don't have an HDMI device, you can open the device manager to see if there is an HDMI sound output in the sound bar. If not, it is an imperfect driver. Just download the latest driver.

If you are sure there is nothing wrong with the settings, try another HDMI cable. According to experience, individual brands have requirements for HDMI cable, so it is recommended to replace the good HDMI cable. There is really no sound, only an HDMI cable can be changed.

The HDMI interface of flat-panel TV has compatibility problems, which is very common in Japanese products. If the sound card on the motherboard is connected with sound, you can try to change an HDMI cable, because some inferior HDMI cables do not support audio output.

Finally, I suggest that the price of HDMI is not very high. If you are watching high-definition movies or buying a slightly better brand, you'd better support 3D video.

4. What if there is no sound when the computer is connected to the TV?

Cause and solution:

A, HDMI graphics card has no built-in sound card, which is more common in NVIDIA chipset graphics cards. With this kind of graphics card, it is necessary to connect the SPDIF output of the motherboard sound card and the SPDIF input of the graphics card (the general graphics card will provide this line and there will be a wiring diagram). Otherwise, the HDMI graphics card has no audio input, and there is no audio signal in the natural HDMI signal.

B, if you use DVI to HDMI cable to connect the computer and TV, you need a separate audio cable to connect the audio output of the computer and the audio input of the TV (the external audio input interface of the HDMI channel, some TVs don't have this interface, so you can't connect the computer and TV in this way, and you may need to change the HDMI graphics card).

C. In the case of using HDMI graphics card with built-in sound card (mostly ATI chipset), there will be at least two sound cards in the computer (onboard sound card and sound card with built-in sound card). You need to select this built-in sound card of HDMI graphics card as the "default sound card" in the audio properties of the control panel, or you may need to select the default sound card of the player as the built-in sound card of this HDMI graphics card.

5. I use the computer mainframe to connect LCD TV. Why is there no sound in the TV speaker? How can I get it?

Main reasons:

1, when the computer and LCD TV are connected through VGA cable, only the picture has no sound; Because VGA cable can only transmit video signals, but not audio signals; Solution: The sound problem can be solved by connecting a separate speaker to the computer or establishing a connection with an HDMI cable.

2. If there is no sound when connecting the computer and the LCD TV through the HDMI cable, you can check whether there is a problem with the volume setting of the TV and the computer. Secondly, whether the computer has set the TV as the default speaker or whether the HDMI cable is of poor quality; Check and solve one by one.

6. What if there is no sound when the TV is connected to the computer?

There is no sound when the desktop is connected to the TV. Solution 1:

The video input of your TV should correspond to the audio input ~

I guess you plugged it into the audio port of AV!

Check the AV port you plugged in, and then tune the TV to that port! See if there's any sound

There is no sound when the desktop is connected to the TV. Solution 2:

1, you need to connect it with an hdmi cable first, and the computer host HDMI is connected to the TV.

2, there are pictures without sound.

3. Double-click to open Realtek HD Audio Manager (as appropriate).

You can see that there is a check mark on the speaker label.

5. Just switch to "Digital Output" and click "Set as Default Device" on the mouse.

6. You can hear the effect immediately.

7. What if there is no sound when the computer is connected to the TV?

This phenomenon is mainly caused by several reasons:

A, HDMI graphics card has no built-in sound card, which is more common in NVIDIA chipset graphics cards. With this kind of graphics card, it is necessary to connect the SPDIF output of the motherboard sound card and the SPDIF input of the graphics card (the general graphics card will provide this line and there will be a wiring diagram). Otherwise, the HDMI graphics card has no audio input, and there is no audio signal in the natural HDMI signal.

B, if you use DVI to HDMI cable to connect the computer and TV, you need a separate audio cable to connect the audio output of the computer and the audio input of the TV (the external audio input interface of the HDMI channel, some TVs don't have this interface, so you can't connect the computer and TV in this way, and you may need to change the HDMI graphics card).

C. In the case of using an HDMI card with built-in sound card (mostly ATI chipset), there will be at least two sound cards (onboard sound card and video card built-in sound card) in the computer at this time, so you need to select the built-in sound card of this HDMI card as the "default sound card" in the audio properties of the control panel, or you may need to select the default sound card of the player as the built-in sound card of this HDMI card. Solutions to such problems are as follows:

1. First, you have to decide to choose HDMI sound output as the default device. In the control panel, open-Sound and audio devices-

Property found, audio, the first column in the label is the default device for sound playback, select HDMI sound output. Make sure that the HDMI audio option in the BIOS settings is turned on normally, that is, set to "Enabled".

2. Secondly, for the audio and video output of HDMI graphics card, it is necessary to change the original default sound card driver on the system motherboard to the audio driver of HDMI graphics card, and open "Control Panel → Sound Audio Equipment → Audio → Sound Play" or

Double-click the "Volume (Speaker)" icon in the lower right corner of the desktop, select "Properties" in the "Options" and confirm that the mixer is selected as "ATI HD Audio Rear".

Output (one card) "or" NVIDIA HDMI

Output (N card) ",to ensure that the audio signal is output by the HDMI audio of the graphics card. In the sound option, HDMI audio output is selected as high-definition audio output mode, such as 7. 1 channel. if there is no

HDMI device, then you can open the device manager and see if there is HDMI sound output in the sound bar. If there is no HDMI sound output, it is a problem of imperfect driving. Just download the latest driver.

3. If you are sure that there is nothing wrong with the settings, try another HDMI cable. According to experience, individual brands have requirements for HDMI cable, so it is recommended to replace the good HDMI cable. There is really no sound, only an HDMI cable can be changed.

4. The HDMI interface of flat-panel TV has compatibility problems, which is very common in Japanese products. If the sound card on the motherboard is connected with sound, you can try to change an HDMI cable, because some inferior HDMI cables do not support audio output.